MODELING OF THE HIGH-VOLTAGE SILICON SCHOTTKY DIODE

The results of modeling of the high-voltage silicon Schottky diode in the device-technological design system Synopsys Sentaurus TCAD was presented.

Nanotechnologies in agricultural production as a factor of transition to a new level of technological design

The article discusses one of the directions of the transition of agricultural production in Russia to the sixth technological order based on the introduction of nanotechnology in the field of hygrothermal effects on grain crops. The features of hygrothermal action on grain under vacuum conditions are presented. The distinctive features of such processing as nanotechnology are substantiated. Based on the method of similarity in the functioning of technical systems for vacuum-capillary processes of humidification, drying, and wet-heat treatment, generalized similarity criteria are obtained, their numerical values are determined, and generalized criterion dependences of the intensity of the processes under consideration on the processing parameters are obtained. The implementation of this method made it possible to quantitatively describe the processes of vacuum capillary hygrothermal treatment of grain, to assign processing parameters and control them.

Algorithm and software for the optimal technological design of a system of simple distillation columns

Objectives. The formalized problem of the optimal design of distillation column systems belongs to the class of mixed integer nonlinear program problems. Discrete search variables are the number of trays in the rectifying and stripping sections of columns, whereas the continuous ones are the operating modes of columns. This study aimed to develop an algorithm and a software package for the optimal technological design of a system of simple distillation columns based on the criterion of total reduced capital and energy costs using rigorous mathematical distillation models.Methods. The solution to this problem is based on the branch and bound method. A computer model of the distillation column system was developed in the environment of the Aspen Hysys software package. The Inside–Out module was used as the distillation model. The developed algorithm is implemented in the software environment of the Matlab mathematical package. To solve the conditional optimization problem, a sequential quadratic programming method-based model was used. The interaction between software add-ins in Matlab and Aspen Hysys is implemented using a Component Object Model interface.Results. Approaches to obtain the lower and upper bounds of the optimality criterion and the branching method for the implementation of the branch and bound method have been developed. In addition, an algorithm for the optimal design of a distillation column of a given topology based on the branch and bound method has been developed. Furthermore, using Matlab, a software package that implements the developed algorithm and is integrated with the universal modeling software AspenHysys has been created.Conclusions. An algorithm and a software package have been developed and implemented that allows automating the design process of distillation column systems and integration with advanced mathematical programming packages, respectively. The performance of the algorithm and software package has been evaluated using the optimal design of the debutanization column as an example.

Open up the Culture of Masculinity in Computer Technology for Gender and Diversity. A Conversation with Judy Wajcman. By Marion Mangelsdorf

The following interview is based on an online conversation that took place in February 2021 between Feminist Science and Technology Studies (STS) researchers Judy Wajcman and Marion Mangelsdorf. In 2004 Judy Wajcman published the STS classic TechnoFeminism, in which she analyses the fundamental presence of digital technologies and technological design processes. Wajcman discusses the range of feminist positions on the technological history of digitization and draws attention to the challenges that still exist today. She casts her decidedly critical eye on the gender issues as well as the racial bias that characterize digitization and assesses opportunities for cultural change.

Revisiting the Relationship Between Deception and Design: A Replication and Extension of Hancock et al. ()

Evidence published nearly 20 years ago suggested people tell more lies per social interaction via synchronous, distributed, and recordless media (the phone) versus relatively richer (face-to-face communication) and leaner media (email, instant messaging). With nontrivial changes to the size and variety of our media landscape, it is worth re-examining the relationship between deception and technology. Over 7 days, 250 participants reported their social interactions and lies across face-to-face communication, social media, texting, the phone, video chat, and email. Replicating Hancock, Thom-Santelli, and Ritchie (2004), people told the most lies per social interaction over synchronous, distributed, and recordless media (the phone, video chat), though the effects were small and between-person effects explained more variance than between-media effects. Lying rates were also associated with aversive personality traits, plus antisocial, and relational deception motives. Together, while media options have evolved, technological design features often remain stable and indicate deception rates. Theoretical contributions are discussed.

Together in cyberspace

A recent musical practice that has emerged as a result of the twenty-first century’s rapidly developing technological landscape is live coding. This is the act of writing computer code for generating music in front of an audience while the performer projects their screen. As the number of live coders performing together increases, so too does the number of screens required to project all of the ensemble’s code. This well-documented problem is addressed in this chapter, which introduces a live coding editor built for collaborative improvisation and reflects on its impact on group creativity and ensemble interaction. The editor Troop displays all performer’s code in one window, simplifying technical setup, and shares inter-performer communication with audiences. This case study explores technological design parameters that allow live-coding composers to collaboratively compose music in real time and discuss what means of interaction and collaboration these afford.

Development of technological processes in mechanical engineering

The textbook provides the main stages, sequence and general methodology for the development of technological processes of mechanical processing of parts and assembly of mechanical engineering products. In the main sections, after the presentation of the elements of the theory, students are assigned project tasks. Many sections are accompanied by examples of their specific implementation. It is compiled to help students of engineering specialties of full - time and part-time education, mastering the methodology of technological design and performing course and diploma projects and works.

Privacy Worlds: Exploring Values and Design in the Development of the Tor Anonymity Network

This paper explores, through empirical research, how values, engineering practices, and technological design decisions shape one another in the development of privacy technologies. We propose the concept of “privacy worlds” to explore the values and design practices of the engineers of one of the world’s most notable (and contentious) privacy technologies: the Tor network. By following Tor’s design and development we show a privacy world emerging—one centered on a construction of privacy understood through the topology of structural power in the Internet backbone. This central “cipher” discourse renders privacy as a problem that can be “solved” through engineering, allowing the translation and representation of different groups of imagined users, adversaries, and technical aspects of the Internet in the language of the system. It also stabilizes a “flattened,” neutralized conception of privacy, risking stripping it of its political and cultural depth. We argue for an enriched empirical focus on design practices in privacy technologies, both as sites where values and material power are shaped, and as a place where the various worlds that will go on to cluster around them—of users, maintainers, and others—are imagined and reconciled.